Heathkit was a famous kit manufacturer in the 1970s. Their catalog was long: it proposed
everything from simple projects to advanced test equipment, color TV sets, Hi-Fi, and
of course video games.

This kit (model GD-1380) was released in 1976. It plays the six games of the AY-3-8500
chip, and has several interesting features. First, it requires a Heathkit TV set to
operate because of its composite output. Back in 1976, only monitors and hi-tech
equipment had a composite input. To use this system, the user had to open his TV set
in order to connect a few wires to its electronic circuits. This is the case with the
Heathkit TV sets: the user manual explains how to connect the system to several TV sets
released by Heathkit. The system has another interesting feature: the sound does not
come from the system itself like most of the other PONG consoles, but comes from
the TV set. The main reason for this is the direct connexion of the system to the TV
set. Since the TV had to be open for connecting, why not connecting additional wires
to the audio amplifier of the TV instead of using a speaker in the system ? Using the
TV as audio output was not possible with regular systems which used a video modulator.
Outputing the sound to the TV would have required additional circuits, hence a higher
price of the systems. Here, the system benefits of a direct connexion to the TV set,
hence the possibility of using the audio circuits of the TV without additional costs.
A last thing: the blue electronic gun of the system is very funny, and the user manual
is extremely detailed.

The system with its two controllers. It looks like an old car radio...

The left knob sets the volume, which is rather rare for a PONG system.

The right knob selects the game to play, and the switches on the middle
set the different levels of difficulty.

The electronic gun for the shouting games.

It reminds those old laser guns from old TV series. It is quite ergonomic,
but uses a simple push-button as trigger. The case is still excellent.

The user manual.

It is rather the construction manual, which describes in full details how to
build the system: wiring, soldering, screwing, case finishing, testing,
setting, trouble-shouting...